EP3286502B1 - Unité de diffusion d'air pour le conditionnement d'air dans un environnement intérieur - Google Patents

Unité de diffusion d'air pour le conditionnement d'air dans un environnement intérieur Download PDF

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Publication number
EP3286502B1
EP3286502B1 EP16719914.0A EP16719914A EP3286502B1 EP 3286502 B1 EP3286502 B1 EP 3286502B1 EP 16719914 A EP16719914 A EP 16719914A EP 3286502 B1 EP3286502 B1 EP 3286502B1
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European Patent Office
Prior art keywords
air
diffusion unit
diffusion
conditioning
monocoque
Prior art date
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EP16719914.0A
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German (de)
English (en)
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EP3286502C0 (fr
EP3286502A1 (fr
Inventor
Jacques GANDINI
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/006—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground receiving heat-exchange fluid from the drinking or sanitary water supply circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D2001/0253—Particular components
    • F28D2001/0286—Radiating plates; Decorative panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/08—Fluid driving means, e.g. pumps, fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
    • F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels

Definitions

  • the present invention relates to a diffusion unit for the air-conditioning of indoor environments.
  • the present invention finds advantageous application in the field of the air-conditioning of environments inside buildings and the like, to which the following description will make explicit reference without thereby losing in generality, in order to allow by heat exchange both the heating during winter and the air-conditioning during summer, through the use of air and water as air-conditioning vector fluids.
  • air-conditioning of indoor environments is defined as the set of the operational steps to allow, at any time of the year and in any external weather condition, the thermo-hygrometric conditions suitable to the comfortable enjoyment by people within indoor environments.
  • the set includes the steps of heating, air-conditioning, ventilation, humidification or dehumidification according to the characteristics of the external weather and the activity within the buildings, with related possible endogenous heat production.
  • air-conditioning system are generally known, which are substantially composed of four subsystems: energy production/transformation plant (heating or cooling production), distribution network of the vector fluids (water, air, refrigerant gases), diffusion terminals (by convection, conduction, radiation), and adjustment assemblies (such as control units, programmable thermostats, thermostatic valves).
  • diffusion terminals such as heaters or radiators, heated towel rails, convector heaters, baseboard terminals, radiating panels, fan coils, and active/passive chilled beams.
  • the low levels of energy consumption of the buildings and the variables depending on the use of the spaces may implicate variable and sudden heating and cooling loads, which favour diffusion terminals able to respond also abruptly in both conditions (heating and cooling).
  • radiators, heated towel rails, convector heaters, radiant baseboard are suitable to the only heating, while for the air-conditioning they require an additional plant; radiant floors generate a good level of comfort, however, they have an unacceptable thermal inertia for the nearly zero energy buildings (NZEB); radiant ceilings, as well as chilled beams, generate a good level of comfort and have a valid application in the renovation of existing buildings, but they can be not comfortable for heating; the radiant walls generate a good level of comfort, but can show lack of homogeneity in heating the more distant areas from the wall, besides presenting space constraints for the furnishing; fan coils, instead, are very efficient because of the low inertia and the short time to make them operative, however, they have significant limitations in terms of comfort, generating winter layering and cold air currents in summer.
  • a known conditioning unit is disclosed in EP2827071 and also in EP2023049 .
  • these documents do not disclose a diffusion unit configured to be fixed to a wall, a unit configured to be fed by water, a diffusion unit provided with a microchannel exchanger, inlet and outlet of water feeding means for microchannels of the microchannel exchanger, a monocoque bodyshell made by polystyrene.
  • Object of the present invention is to realize a diffusion unit able to overcome the drawbacks and problems of known diffusion terminal means specified above.
  • an object of the present invention is to realize a diffusion unit, which has high-energy efficiency and provides high comfort levels of air-conditioning both during summer and during winter.
  • Another object is to realize a diffusion unit, which is reliable, robust and resistant, and at the same time light and with a fine aesthetic appearance of furnishing.
  • a further object of the present diffusion unit is to be industrially feasible with extremely competitive costs with respect to conventional diffusion terminals aforementioned.
  • U globally indicates a diffusion unit for the air-conditioning of indoor building environments in general, which makes use, in particular, of the heat exchange technology known by the term "microchannel", i.e. is suitable to use water as a vector fluid for diffusing heat and cold through air, allowing the efficient winter heating and summer air-conditioning in buildings and environments in which people dwell, live, work, and have fun.
  • the unit U includes a cabinet-like outer covering structure S in monolithic metal, preferably aluminium, which has an extremely linear and simple structure, suitable to be normally wall mounted, at a height of about 20-25 cm from the floor, through a self-levelling template D which is also, preferably, made of aluminium. ⁇
  • the structure S is provided, only on its front vertical surface, with a plurality of through holes F for the air-conditioned air diffusion and suitable to define a large-surface diffusion array G, which, besides determining a best comfort, confers a pleasant aesthetic appearance; the shape of the holes F of the array G may be customized depending on the needs and the environment type, in an almost infinite number of motifs and patterns.
  • the structure S is suitable to be secured to a single piece frame 2, preferably also made of aluminium, which frame 2 is suitable to contain a monocoque bearing or bodyshell structure 3 made of polystyrene or expanded styrofoam.
  • the monocoque structure 3 is, in turn, suitable to define a supporting frame assembly, by means of insulating supports 5 made of rubber, and upper and lower plate means 6 and 8, for at least a heat exchanger 4 belonging to the microchannel technology type.
  • the unit U further includes a motorized ventilator assembly 7, preferably but not limited to the tangential type, which is inferiorly attached to the frame 3 via the plate 6 adjacent to the plate 9 shaped as a bowl, and metallic (Cl. G1) or acrylic (cl. G3) filter means 10, which comply with the current legislation EN779:2005, housed in use in the structure 3.
  • a motorized ventilator assembly 7 preferably but not limited to the tangential type, which is inferiorly attached to the frame 3 via the plate 6 adjacent to the plate 9 shaped as a bowl
  • metallic (Cl. G1) or acrylic (cl. G3) filter means 10 which comply with the current legislation EN779:2005, housed in use in the structure 3.
  • Frame 2 The containment frame 2 is mounted on wall using the template D ("backpack" interlocking) made of aluminium for the wall mounting.
  • Structure 3 has a highly innovative and distinctive element of the present invention with use of a monocoque bearing structure and completely made of styrofoam (commonly also called: EPS, polystyrene or expanded styrofoam) in contrast to the traditional devices formed by numerous and complex parts made of galvanized steel sheet, plastics and various types of insulating elements joined together by numerous screws and various adhesives.
  • EPS styrofoam
  • polystyrofoam commonly also called: EPS, polystyrene or expanded styrofoam
  • Such polystyrene structure provides a comfortable and easy housing of all the equipment and their support, the perfect thermal insulation, and the reduction of the number of the used parts.
  • Advantages of this technical solution Polystyrene is a material widely used in industry and in the building industry, due to very limited costs and excellent thermal insulation.
  • the styrofoam has a very low thermal conductivity, due to the closed cell structure, in which air accounts for 98%. It has unique and certified recyclability and self-extinguishing features, which allow a wide use in construction industry. In a few years, the styrofoam has become the most used material in thermal insulation measures for buildings ("coat"). This material has excellent physical and mechanical properties, a reduced thermal conductivity, a good stability from the dimensional point of view, a homogeneous density, and a high mechanical strength.
  • the monocoque bearing structure used with a density of 20-30kg/m3, it allows excellent supporting and housing of all the equipment inside the unit, which, being made of aluminium (and, thus, lightweight), are very well combined with the styrofoam chosen as bearing structure.
  • the styrofoam used for thermal insulation is obtained from natural resources, and has a much lower environmental impact compared to other materials. It is a highly recyclable material. Its recyclability is definitely a plus, which, thus, in environmental terms, makes it preferable to other synthetic materials, able to perform the same function, but with a heavier environmental impact.
  • Polystyrene is considered a safe material with respect to the human and environmental health, in fact, contrary to some insulating materials, it is not carcinogenic. It has been found, by means of some tests, that styrene (the monomer from which the expanded polystyrene is produced) is also present in nature in many foods, including strawberries, beans, nuts, beer, wine, coffee and cinnamon seeds, therefore, it cannot be defined harmful neither to humans nor to the environment. Moreover, EPS - polystyrene-expanded styrofoam is permeable to water vapour, thus it is breathable, but, at the same time, it is waterproof.
  • the permeability to water vapour ensures that inside or adjacent the polystyrene - expanded styrofoam, moulds do not form. With respect to water, it is known that this latter does not dissolve the polystyrene, and it does not pass through the walls of the closed cells. The capillarity absorption of this material is practically zero.
  • Microchannel heat exchanger 4 has a significantly higher efficiency (around +40%) compared to the traditional copper tube bundle and aluminium mechanically mandrelled finning exchangers (in short "Copper-Aluminium Assemblies").
  • the innovation underling the present invention is the result of the greater efficiency that makes the use of this technology extremely innovative within the invention, but also of the fact that these microchannel exchangers have a monolithic design (in contrast to the usual Copper-Aluminium Assemblies, which, instead, are a set of different materials extremely less integral with each other and which need a frame, generally in metal sheet).
  • microchannel exchanger allows its interlocking insertion into the monocoque bearing structure 3 completely made of styrofoam, with advantages in assembly times of the unit unrivaled compared to traditional diffusion terminals.
  • a microchannel exchanger is also completely made of aluminium, and may be easily recycled, without the necessity of any kind of separation.
  • a microchannel exchanger has the following remarkable advantages: - Reduced ventilation energy with an average reduction of air-side load losses of 25%: at aeraulic level, the limited thickness of the finned pack (generally 25mm) and the improved fluid dynamics, of the primary tube geometry favour an important reduction of the air-side load losses compared to traditional copper-aluminium assemblies. This affects the decrease of the electric power used for the ventilation: lower consumption and lower noise.
  • the unit U sucks air from the environment in which they are placed through the two air inlets A and B placed at the bottom of the unit U itself ( Figures 6 and 7 ).
  • the intake air is then filtered by the filters 10 and vertically conveyed from the fan 7 into the channel 12 within the structure S.
  • the air enters in a calm zone, decreases its speed and proceeds through the microchannel exchanger 4, where it is heated, cooled and/or dehumidified, according to the water temperature with which the exchanger 4 is fed and to the conditions of the ambient air.
  • the water inlet and outlet are placed in the points C and D, respectively, where there are two male threaded attachments to which the water distribution system delivery and return pipes are connected, respectively.
  • Downstream of the exchanger 4 the heated, cooled and/or dehumidified air flows out of the array of holes G on the front surface of the unit U, through which it spreads uniformly at a low speed and at the desired temperature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (3)

  1. Unité de diffusion (U) pour la climatisation d'environnements intérieurs, apte à être alimentée avec de l'eau, comprenant un châssis (2) adapté pour être fixé à un mur; une structure de carrosserie monocoque (3) adaptée pour être fixée audit châssis (2), des moyens d'échange de chaleur (4) adaptés pour être supportés par ladite structure de carrosserie monocoque (3) et entourés par ladite structure monocoque (3) sans des zones de dispersion de chaleur vers l'extérieur, lesdits moyens de chaleur (4) comprenant au moins un échangeur (4) à microcanal comprenant des moyens de ventilateur (7) et des moyens de filtrage ; et une structure de couverture (S) munie à l'avant de ladite unité (U) d'une grille (G) de trous (F) pour la diffusion de l'air conditionné, l'unité de diffusion étant caractérisée en ce que la structure de carrosserie monocoque (3) est réalisée entièrement en polystyrène ou en polystyrène expansé, et l'échangeur à microcanal (4) est pourvu de moyens d'alimentation de l'eau en entrée et en sortie pour l'eau qui alimente les microcanaux de l'échangeur à microcanal (4) pendant l'utilisation de celui-ci.
  2. Unité de diffusion selon la revendication 1, caractérisée en ce que les moyens de filtrage (10) sont constitués d'un matériau métallique.
  3. Unité de diffusion selon la revendication 1, caractérisée en ce que lesdits moyens de filtrage (10) sont constitués d'un matériau acrylique.
EP16719914.0A 2015-04-20 2016-04-15 Unité de diffusion d'air pour le conditionnement d'air dans un environnement intérieur Active EP3286502B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVR2015A000064A ITVR20150064A1 (it) 2015-04-20 2015-04-20 Unita¿ di diffusione per la climatizzazione di ambienti interni.
PCT/IB2016/052156 WO2016170456A1 (fr) 2015-04-20 2016-04-15 Unité de diffusion pour le conditionnement de l'air d'un environnement intérieur

Publications (3)

Publication Number Publication Date
EP3286502A1 EP3286502A1 (fr) 2018-02-28
EP3286502B1 true EP3286502B1 (fr) 2023-10-18
EP3286502C0 EP3286502C0 (fr) 2023-10-18

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EP16719914.0A Active EP3286502B1 (fr) 2015-04-20 2016-04-15 Unité de diffusion d'air pour le conditionnement d'air dans un environnement intérieur

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EP (1) EP3286502B1 (fr)
IT (1) ITVR20150064A1 (fr)
WO (1) WO2016170456A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1025672B1 (fr) * 2018-03-09 2019-05-21 Bureau D'etudes Solaires Sprl Ventilo-convecteur avec echangeur thermique et repartition du debit d'air optimises

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005103576A2 (fr) * 2004-04-22 2005-11-03 Stirling Technology, Inc. Ventilateurs de recuperation de chaleur et d'energie et leurs procedes d'utilisation
KR100972273B1 (ko) * 2007-07-25 2010-07-23 산요덴키가부시키가이샤 천장 매립형 공기 조화 장치의 실내기
JP4488106B2 (ja) * 2008-07-18 2010-06-23 ダイキン工業株式会社 天井設置型の空気調和機
ES2383975B1 (es) * 2010-12-01 2013-05-30 Climetal, S.A. Evaporador/condensador de microcanales.
JP5494705B2 (ja) * 2012-03-16 2014-05-21 ダイキン工業株式会社 ２方向吹出し式の天井埋込型空気調和機
CN103162475B (zh) * 2013-03-22 2015-04-15 青岛海信日立空调系统有限公司 一种空调散热循环系统

Also Published As

Publication number Publication date
WO2016170456A1 (fr) 2016-10-27
ITVR20150064A1 (it) 2016-10-20
EP3286502C0 (fr) 2023-10-18
EP3286502A1 (fr) 2018-02-28

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